Issue #3352148: Output from action ViewsExport is always empty

modules/views/src/Plugin/Action/ViewsExport.php

@@ -40,7 +40,7 @@ class ViewsExport extends ViewsQuery {
       $this->view->preExecute();
       $this->view->execute();
     }
-    $this->view->display_handler->buildRenderable($this->view->args, FALSE);
+    $build = $this->view->display_handler->buildRenderable($this->view->args, FALSE);
     /**
      * @var \Drupal\Core\Render\RendererInterface $renderer
      */